Fix IdleNotificationFinishMarking test on slow devices.

test/cctest/test-heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2201 matching lines @@
   // since the completion threshold is not reached
   for (size_t i = 0; i < IncrementalMarking::kMaxIdleMarkingDelayCounter - 2;
        i++) {
     marking->Step(1 * MB, IncrementalMarking::NO_GC_VIA_STACK_GUARD,
                   IncrementalMarking::FORCE_MARKING,
                   IncrementalMarking::DO_NOT_FORCE_COMPLETION);
     CHECK(!marking->IsIdleMarkingDelayCounterLimitReached());
   }
 
   // The next idle notification has to finish incremental marking.
-  const int kShortIdleTimeInMs = 1;
-  CcTest::isolate()->IdleNotification(kShortIdleTimeInMs);
+  const int kLongIdleTime = 1000000;
+  CcTest::isolate()->IdleNotification(kLongIdleTime);
   CHECK_EQ(CcTest::heap()->gc_count(), 1);
 }
 
 
 // Test that HAllocateObject will always return an object in new-space.
 TEST(OptimizedAllocationAlwaysInNewSpace) {
   i::FLAG_allow_natives_syntax = true;
   CcTest::InitializeVM();
   if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return;
   if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
@@ skipping 2313 matching lines @@
 #ifdef DEBUG
 TEST(PathTracer) {
   CcTest::InitializeVM();
   v8::HandleScope scope(CcTest::isolate());
 
   v8::Local<v8::Value> result = CompileRun("'abc'");
   Handle<Object> o = v8::Utils::OpenHandle(*result);
   CcTest::i_isolate()->heap()->TracePathToObject(*o);
 }
 #endif  // DEBUG